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Repair Kits Available By Part Number Section 2 Page - GAMECO

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WARNING: Installation, usage and maintenance of this product<br />

must be in compliance with all Engineered Controls International,<br />

Inc. instructions as well as requirements and provisions of NFPA<br />

#54, NFPA #58, DOT, ANSI, all applicable federal, state, provincial<br />

and local standards, codes, regulations and laws.<br />

Inspection and maintenance on a periodic basis is essential.<br />

Installation and maintenance should be performed only by qualified<br />

personnel.<br />

Be sure all instructions are read and understood before installation,<br />

operation and maintenance. These instructions must be<br />

passed along to the end user of the product.<br />

CAUTION: Contact or inhalation of liquid propane, ammonia and<br />

their vapors can cause serious injury or death! NH3 and LP-Gas<br />

must be released outdoors in air currents that will insure dispersion<br />

to prevent exposure to people and livestock. LP-Gas must be kept<br />

far enough from any open flame or other source of ignition to<br />

prevent fire or explosion! LP-Gas is heavier than air and will not<br />

disperse or evaporate rapidly if released in still air.<br />

Operating Instructions<br />

These instructions must be included with other tank operating<br />

instructions.<br />

Chek-Lok Excess Flow Valves<br />

ECII ® Chek-Lok excess flow valves are designed to provide a convenient<br />

means of withdrawing liquid from stationary tanks prior to moving the<br />

tank. These valves are not intended for permanent liquid withdrawal<br />

installations. They allow for compliance with NFPA Pamphlet 58 standards<br />

which state that every container with more than 125 gallons water<br />

capacity built after July 1, 1961, has a connection for liquid evacuation,<br />

at least 3 /4" NPT size, and that every container designed for stationary<br />

use contains no more propane than 5% of their water capacity during<br />

transportation.<br />

Chek-Lok Adapters<br />

It is recommended that these brass adapters (7572C-14A and<br />

7572C-15A) should be connected to ECII ® Chek-Lok excess flow<br />

valves to open the check mechanism properly. A built-in nylon<br />

gasket provides a gas-tight seal.<br />

CAUTION: Wear approved protective gloves and eye protection<br />

when working with Chek-Loks. Do not vent LP-Gas near possible<br />

sources of ignition.<br />

Use an ECII ® 7550P angle valve with an ECII ® adapter 7572C-<br />

14A ( 3 /4" NPT female connection) or 7572C-15A ( 3 /4" NPT male<br />

connection). Use an ECII ® 7550P without an adapter in an<br />

emergency only.<br />

7572FC & 7580FC<br />

Chek-Lok ®<br />

Excess Flow Valves<br />

To Put Chek-Lok In Service<br />

1. Use an ECII ® 7550P angle valve or assemble a suitable capacity shutoff<br />

valve such as an ECII ® A7505AP, A7506AP or 7705P to ECII ®<br />

adapters (see below).<br />

2. Loosen 8594-3A plug to vent accumulated LP-Gas from Chek-Lok.<br />

If venting does not stop, retighten plug and use other approved<br />

means to withdraw liquid.<br />

NOTE: Use a suitable size wrench to remove cap and adapter so as<br />

to not remove Chek-Lok from tank at the same time.<br />

3. Close shut-off valve to permit excess flow valve to open.<br />

4. If for some reason the Chek-Lok does not open after following this<br />

procedure, then it is a simple matter to equalize pressures by<br />

introducing vapor pressure from the vapor return valve on top of the<br />

tank to the downstream side of the Chek-Lok or by pumping liquid<br />

back through the Chek-Lok.<br />

To Re-Lock Chek-Lok<br />

1. Tank pressure must be in excess of 35 PSIG.<br />

2. Close shut-off valve and disconnect hose or piping.<br />

3. Open shut-off valve fully. Liquid discharging to atmosphere should<br />

cause the excess flow valve to close, provided tank pressure is 35<br />

PSIG or more. If, for any reason, the excess flow valve does not<br />

close, the shut-off valve must be closed immediately and must not<br />

be removed until the system can be evacuated and the unit repaired.<br />

4. After the excess flow valve closes, remove ECII ® adapter or pipe<br />

nipple to which shut-off valve is attached.<br />

5. Clean face of Chek-Lok and install 8594-3A plug with 8594-1A<br />

gasket.<br />

IMPORTANT: Use only 8594-3A plug. Do not use standard pipe plug.<br />

Chek-Lok Mounting<br />

ECII ® Chek-Lok valves may be bottom mounted or top mounted with<br />

a dip tube. For bottom mounting, it is preferable to position the coupling<br />

in the shell or head, slightly off bottom, to avoid accumulation of sludge,<br />

etc..., around the check valve which could affect the proper operation<br />

of the excess flow valve.<br />

Top Opening<br />

Open<br />

Closed<br />

Bottom Opening<br />

7550P<br />

7572C-14A<br />

8594-3A<br />

Chek-Lok Plug<br />

Head Opening<br />

7572FC or 7580FC<br />

Chek-Lok Valve<br />

Excess Flow<br />

Valve Closed<br />

Excess Flow<br />

Valve Open

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